Banded krait. (Useful snake) It's so easy to identity him. The black and yellow mark on his body makes it unique. This snake is very common in Bangladesh and some Asian countries. You know what? This snake is highly venomous but very calm and peace minded. Bite of this snake very rare because of its peace of mind. This snake is dangerous for other venomous snakes like Russell vipers! Other venomous snakes are the food of this Banded krait. So, banded krait isn’t harmful to humans, they are useful for use because they are reducing or minimizing other venomous or poisonous snakes. So, don’t kill this snake if you found anywhere. :)